Pedal on Boss ME-20b problems?

I recently got a BOSS ME-20B pedal board thingy and I've been enjoying it but your supposed to be able to change the volume pedal to a wah pedal by pressing down the pedal, but it doesnt change it.
Am I doing it wrong? How do you change the volume pedal to a wah pedal?

PS: I also heard you can set the Wah Pedal to default instead of having the volume pedal on default, anyone know how to do that?
 
Back
Top